CPT code 83655 identifies a laboratory assay that quantifies lead levels in patient specimens to detect and monitor lead exposure. This test is an important public health and clinical tool for diagnosing lead poisoning, guiding treatment decisions, and supporting occupational and environmental health surveillance. Nationally, lead testing remains relevant due to ongoing concerns about environmental exposure, vulnerable populations such as children and pregnant people, and workplace monitoring requirements.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of CPT code 83655, clinical context for when the test is used, and what settings typically perform the service. The publication provides benchmarks and coverage considerations, coding and billing essentials, and notes on clinical indications and utilization patterns. It also summarizes common modifiers associated with lab services and highlights areas where policy updates or payer-specific requirements may affect coverage or claims processing. Data not available in the input is explicitly noted where relevant.